vented by Prog. NOX activity was increased by CIH in the brainstem, and this was also blocked by Prog. The study draws focus to the links between ovarian hormones and the consequences of sleep apnoea in women. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.OBJECTIVE To construct international ultrasound-based standards for cerebellar growth and Sylvian fissure maturation. METHODS Healthy, well-nourished pregnant women, enrolled at less then 14?weeks of gestation in the Fetal Growth Longitudinal Study (FGLS) of INTERGROWTH-21st , an international multicenter, population-based project, underwent 3D serial fetal ultrasound scans every 5±1?weeks until delivery in study sites located in Brazil, India, Italy, Kenya and the UK. We measured the trans-cerebellar diameter and assessed Sylvian fissure maturation using 2D images extracted from the available 3D fetal head volumes acquired. For each Sylvian fissure maturation score (left and right), we calculated the mean gestational age and 95% CI. We assessed goodness of fit of the resultant model and the possibility of pooling data from the five sites using variance component analysis and standardized site differences. We modelled trans-cerebellar diameter and Sylvian fissure maturation using fractional polynomial regreswith advancing gestation with complete overlap of the mean gestational age and 95% CI between the sexes for each development score. No differences in maturation between the right and left hemispheres were observed. CONCLUSION We present here, for the first time, international standards for fetal cerebellar growth and Sylvian fissure maturation throughout pregnancy based on a healthy fetal population that exhibited adequate growth and development at 2?years of age. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.OBJECTIVES Fetal hydrops is associated with increased perinatal mortality and morbidity. The etiology and outcomes of fetal hydrops may differ according to the gestational age (GA) at diagnosis. The aim of this study was to evaluate the causes, evolution and outcomes of non-immune fetal hydrops (NIFH) according to the GA at diagnosis. METHODS This was a retrospective cohort study of all singleton pregnancies complicated by NIFH at the Fetal Medicine Unit at St George's University Hospital, London between 2000 and 2018. All fetuses had a detailed anomaly and cardiac ultrasound scans, karyotyping and infection screening. https://www.selleckchem.com/products/deg-35.html Prenatal diagnostic and therapeutic interventions, GA at diagnosis and delivery, as well as pregnancy outcomes were recorded. Regression analysis was used to test for potential association between possible risk factors and perinatal mortality. RESULTS We included 273 fetuses with NIFH. Etiologies varied significantly in the three trimesters. Excluding women declining invasive testing (n=30), the cause of NIFH was defined as "unknown" in 62 out of 243 cases (25.5%). Chromosomal aneuploidy was the commonest cause in the first trimester. It continued to be a significant etiologic factor in the second trimester along with congenital infections. In the third trimester, the most common etiology was cardiovascular abnormalities. Among the 152 (55.7%) women continuing the pregnancy, 48 (31.6%) had fetal intervention, including the insertion of pleuro-amniotic shunts, fetal blood transfusion and thoracocentesis. Fetal intervention was significantly associated with lower perinatal mortality (OR 0.30, 95% CI 0.14-0.61, p0.05). CONCLUSIONS Earlier GA at diagnosis was associated with an increased risk of aneuploidy and worse pregnancy outcomes, including higher risk of perinatal loss. Fetal therapy was significantly associated with lower perinatal mortality. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.BACKGROUND AND AIMS Uruguay and Chile have the highest levels of marijuana use in Latin America and experienced consistent increases over the last 2 decades. We aim to calculate separate age-period-cohort (APC) effects for past-year marijuana use in Uruguay and Chile, which have similar epidemiologic and demographic profiles, but diverging paths in cannabis regulation. DESIGN Age, period and cohort study in which period and cohort effects were estimated as first derivative deviations from their linear age trend, separately by country and gender. SETTING Uruguay and Chile. PARTICIPANTS General population between 15 and 64 years of age. MEASUREMENTS Past-year marijuana use from household surveys with five repeated cross-sections between 2001-2018 in Uruguay (median n=4,616) and 13 between 1994-2018 in Chile (median n=15,895). FINDINGS Marijuana use prevalence in both countries peaked at 20-24 years of age and increased consistently across calendar years. Period effects were strong and positive, indicating that l rights reserved.As a prospective fresh water purification device, solar steam generation system harvests great focus recently. But in practice, it often suffers from poor solar energy conversion efficiency and low water production rate due to failed material selection and improper microscopic structure design. Here, we fabricate an efficient solar steam generation system by "building" polyoxometalate "nano-wall" on rice paper derived three-dimensional porous carbon paper. In this solar steam generation system, the altitude of vertically aligned CoP 4 Mo 6 "nano-wall" range from 100 to 150 nm with thickness about 15 to 25 nm. Under 1 sun irradiation (1 kW?m -2 ), surface temperature increases from 29 to 50 ˚C in a short time with solar thermal conversion efficiency achieving at 92.8%. The stability and durability of this solar steam generation system are also prospective, which stand up 15 cycle continuous tests. Its attractive solar energy conversion performance originates from intensive sunlight absorption and conversion ability of CoP 4 Mo 6 "nano-wall", as well as ultra promising heat localization and water transportation property of three-dimensional porous carbon paper. This solar steam generation system is employed for seawater desalination and organic dyes polluted water purification, which receives inspired results. © 2020 WILEY-VCH Verlag GmbH &amp; Co. KGaA, Weinheim.